著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Lehfeldt, Robert Alfred","Gold, prices, and the Witwatersrand",,P.S. King,1919,Studies in economics and political science,,,,https://cir.nii.ac.jp/crid/1130000796069283456